Remote keyless entry systems consist of a key fob transmitter and a receiver inside the vehicle. This RF Wireless Transmitter when programmed will allow you to send the data to the RF receiver, decode it, and start the engine or open the door.

• Single-chip security transponder and keyless entry solution with an on-chip UHF transmitter
• PCF7936/37 or PCF7938 (96-bit) family compatible transponder operation
• Low-power RISC programmable device operation
• On-chip, PLL-based UHF transmitter (315/434 MHz)
• Programmable ASK/FSK modulation characteristics
• Up to seven command button inputs
• On-chip memory:
  - 8/16 Kbytes of E-ROM
  - 512 bytes of EEPROM, 192 bytes of RAM
• Single lithium cell operation (2.1 to 3.6 V)
• Package: TSSOP20 or LSP
  
  

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